Not real happy!!
Just for comparison here is my setup dynoed at Eastside with AS 5.3L heads and a 232/232 57x 112 cam. I have an LS6 intake, Kooks long tubes\y-pipe with cats, SVO #30 injectors, Ported TB, descreened MAF, Lid, and with the Borla wide open. I also have a Moser 12-bolt with 4.11's.
Click here for Dyno
The blue is the same setup but with JPR heads that were replaced with the AS 5.3's. Unfortunatly the shortblock let go a little bit afterwards, I have TTP building me a nice forged setup with a new LS6 block and there "equalizer" cam. The Heads were sent back to AS to make sure everything is good (he wants to change the valves?)because I kinda complained about my numbers also, especially since I was told my JPR heads didnt flow anywhere near what the AS's did and the preload was wrong (on the JPR setup) but yet I didnt make that much more power. The timing was higher on the JPR tune to make more power and I also changed from TTS headers to the Kooks wich may or may not have been a factor in the HP increase between the heads also. I have seen Jays heads make great numbers and with a new shortblock and TTP's cam dare I say it............I am expecteing to get great numbers back, dyno and track.
Now I just have to wait and see.
Click here for Dyno
The blue is the same setup but with JPR heads that were replaced with the AS 5.3's. Unfortunatly the shortblock let go a little bit afterwards, I have TTP building me a nice forged setup with a new LS6 block and there "equalizer" cam. The Heads were sent back to AS to make sure everything is good (he wants to change the valves?)because I kinda complained about my numbers also, especially since I was told my JPR heads didnt flow anywhere near what the AS's did and the preload was wrong (on the JPR setup) but yet I didnt make that much more power. The timing was higher on the JPR tune to make more power and I also changed from TTS headers to the Kooks wich may or may not have been a factor in the HP increase between the heads also. I have seen Jays heads make great numbers and with a new shortblock and TTP's cam dare I say it............I am expecteing to get great numbers back, dyno and track.
Now I just have to wait and see.
Last edited by 9T9BlueTA; Jul 26, 2004 at 03:52 PM.
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Posts: 470
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From: Plano, Tx.
Originally Posted by foff667
maybe its the raven catback 
I agree, I heard the ravin catbacks don't flow any better than a flowmaster and Midas sells them.
Destroyer, do you have a cutout before that catback because I think that is what is choking your motor and holding down the hp and tq.
I don't think the MAC's are really affecting your numbers that much.
Last edited by Cobraeater; Aug 6, 2004 at 02:45 PM.
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From: Orange county n.y.
I'm not sure how good this ravin flow's so i might try to make a flange right before the muffler so i could do before and after test at the dyno. Anyway I ordered Kook 1 3/4 to 1 7/8 stepped headers in stainless so i atleast know that there will be restrictions for the future 
Thread Starter
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From: Orange county n.y.
Originally Posted by 9T9BlueTA
Off topic here but it says you are from Orange County NY. Ever see the OCC (Orange County Choppers) guys? I have no idea how big Orange County is though.
Originally Posted by 9T9BlueTA
Off topic here but it says you are from Orange County NY. Ever see the OCC (Orange County Choppers) guys? I have no idea how big Orange County is though.
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Originally Posted by destroyerSS
I'm not sure how good this ravin flow's so i might try to make a flange right before the muffler so i could do before and after test at the dyno. Anyway I ordered Kook 1 3/4 to 1 7/8 stepped headers in stainless so i atleast know that there will be restrictions for the future
Bruce
